期刊
SCIENCE
卷 361, 期 6397, 页码 64-67出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aat0049
关键词
-
资金
- U.S. Department of Energy (DOE) Office of Basic Energy Sciences (BES) SUE Division Accelerator and Detector RD program
- LCLS Facility
- SLAG [DE-AC02-05-CH11231, DE-AC02-76SF00515]
- AMOS program within Ye Chemical Sciences, Geosciences, and Biosciences Division, BES of the DOE [DE-AC02-76SF00515]
- Office of Naval Research [N00014-E-1-0828]
- Global Climate and Energy Project
- National Science Foundation, Major Research Instrumentation pmgram [ACI4429830]
- Wolkswagen Foundation
- DOE Office of Science, BES [DE-SC0014170]
- U.S. Department of Energy (DOE) [DE-SC0014170] Funding Source: U.S. Department of Energy (DOE)
Conical intersections play a critical role in excited-state dynamics of polyatomic molecules because they govern the reaction pathways of many nonadiabatic processes. However, ultrafast probes have lacked sufficient spatial resolution to image wave-packet trajectories through these intersections directly. Here, we present the simultaneous experimental characterization of one-photon and two-photon excitation channels in isolated CF3I molecules using ultrafast gas-phase electron diffraction. In the two-photon channel, we have mapped out the real-space trajectories of a coherent nuclear wave packet, which bifurcates onto two potential energy surfaces when passing through a conical intersection. In the one-photon channel, we have resolved excitation of both the umbrella and the breathing vibrational modes in the CF3 fragment in multiple nuclear dimensions. These findings benchmark and validate ab initio nonadiabatic dynamics calculations.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据